1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#include "lint.h"
33#include <mtlib.h>
34#include <stdarg.h>
35#include <errno.h>
36#include <thread.h>
37#include <synch.h>
38#include <values.h>
39#include "print.h"
40#include <sys/types.h>
41#include "libc.h"
42#include "mse.h"
43
44/*VARARGS1*/
45int
46printf(const char *format, ...)
47{
48	ssize_t count;
49	rmutex_t *lk;
50	va_list ap;
51
52	va_start(ap, format);
53
54	/* Use F*LOCKFILE() macros because printf() is not async-safe. */
55	FLOCKFILE(lk, stdout);
56
57	_SET_ORIENTATION_BYTE(stdout);
58
59	if (!(stdout->_flag & _IOWRT)) {
60		/* if no write flag */
61		if (stdout->_flag & _IORW) {
62			/* if ok, cause read-write */
63			stdout->_flag |= _IOWRT;
64		} else {
65			/* else error */
66			FUNLOCKFILE(lk);
67			errno = EBADF;
68			return (EOF);
69		}
70	}
71	count = _ndoprnt(format, ap, stdout, 0);
72	va_end(ap);
73
74	/* check for errors or EOF */
75	if (FERROR(stdout) || count ==  EOF) {
76		FUNLOCKFILE(lk);
77		return (EOF);
78	}
79
80	FUNLOCKFILE(lk);
81
82	/* check for overflow */
83	if ((size_t)count > MAXINT) {
84		errno = EOVERFLOW;
85		return (EOF);
86	} else {
87		return ((int)count);
88	}
89}
90
91#ifndef _LP64
92
93/*
94 * 32-bit shadow function of printf().
95 * When using the c89 compiler to build 32-bit applications, the size
96 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
97 * The shadow function uses 32-bit size of intmax_t for %j conversion.
98 * The #pragma redefine_extname in <stdio.h> selects the proper routine
99 * at compile time for the user application.
100 * NOTE: this function only exists in the 32-bit library.
101 */
102
103int
104_printf_c89(const char *format, ...)
105{
106	ssize_t count;
107	va_list ap;
108
109	va_start(ap, format);
110	count = _vprintf_c89(format, ap);
111	va_end(ap);
112	return ((int)count);
113}
114
115#endif
116